Improvement in machines for making nuts



7. W. HUBBARD, OF PHILADELPHIA,PENNSYLVANIA.

IMPROVEMENT IN MACHINES FOR MAKING NUTS.

iSpecification forming part of Letters Patent No. 58, Mid, dated September 18, 1866.

To all whom it may concern:

Be it known that I, W. W. HUBBARD, of Philadelphia, Pennsylvania, have invented certain Improvements in Nut-Makin g Machinos; andIdo hereby declare the following` to be a full, clear, and exact description of the same, reference being had tothe accompanying drawings, and tothe letters of reference marked thereon.-

My invention consists of certain mechanism, fully described hereinafter, forforining nuts with rapidity and accuracy.

In order to enable others skilled in the art to make and use my invention, I will now proceed to describe its construction and operation.

On reference to the accompanying drawings, which form a part of this specification, Figure l is a side elevation, partly in section, of my improved nut-making machine; Fig. 2, a sectional elevation on the line l 2, Fig. l 5 Fig. 3, a side view, partly in section, looking in the 'direction of the arrow, Fig. l; Fig. 4, a sectional plan on the line 3 4, Fig. l 5 Fig. 5, a detached plan View of part of the machine; and Fig. 6, a section on the line 5 6, Fig. 5.

Similar letters refer to similar parts throughout the several views.

A is a circular plate, supported on legs a a a a', two of which, a and a', are connected by a cross-piece, b. To this base-plate are secured two upright frames, G C,which are connected together at the top by a cross-piece, D, and between the two frames slides a cross-head, E, which is suspended by a link, F, jointed to standards 7 8 on the cross-head from the end of a weighted lever, G, hung to the cross-piece D.

In the cross-head E are boxes c c, for the reception of an adjustable cutter, d, and adjustable punches or dies d', d2, d3, d, and d5, the said cutter and punches being secured in recesses in the boxes by gibs e and keys e', which pass through slotted lugs f f projecti ing from each box.

The punches d3, d4, and d5 are square and dat on their faces, and in the punch d3 is an orifice, a?. The punches d and d2 are round, and in the former, which is concave on its face, slides a rod, z', against the upper end of which bears a spring, i, secured to the crossheacl E.

In the frames C C turns a shaft,` H, the cog-wheel H on which gears into a pinion, I, on a driving-shaft, I', the latter turning in bearings on the frame C.

To the center of the cross-head E, near the lower end ofthe same, is jointed one end of a connecting-rod, L, against one edge of which bears a spring, j, the upper end of the said rod projecting through an opening, y, in the top of the cross-head, and having in its upper end a groove, w, adapted to a rib, w', on the shaft H. On this shaft is a projection, n, which, duringa portion of the movement of the shaft, bears against a shoulder, a, on the bracket 7.

'To a vertical shaft, g, which passes through the center of the plate A, is secured a disk, J, which rests on the base-plate, and in the edge of this disk are six openings,z, each of such a size as to receive the blank from which the nut is to be formed.

To the lower end of the shaftg, and beneath the plate A, is secured a disk, V, and also a bevel-wheel, g', the teeth of the latter being adapted to those of a bevel-wheel, g2, secured to the end of a shaft, K, which. turns in bearings at the under side of the said plate A. In a recess, X, in this plate, below the cutter d, is secured an adjustable cutter, 7n, and in front of the latter is a. sliding block, l, which rests on a spring, 5, and has a limited vertical motion in the opening X.

To the plate A are secured two plates, N and N', the edges of which` project over the edges of the disk J 5 and in the plate N is an opening corresponding to the opening X; and in the plate N is an opening, which is directly below the punch d2, and corresponds in size to the latter and to an opening below itinthe plate A. In this plate, below the punch d3, is arecess, t, Figs. 5 and 6, in which fits a slide, m, and through an opening in the latter extends a rod, n, which is secured to the cross-piece B between the lugs a a', the upper end of the rod being nearly level with the upper face of the plate A.

To a projection at one side of the slide m is secured the lower end of a rod, 0, the upper end of which is jointed to the outer end of an. arm, O', secured to a shaft, I), the latter turning in brackets attached to the frame C and to the cross-piece D.

, At the outer end ofthe shaft P, Fig. 1, is an arm, P', which bears on the edge of a camdisk, Q, secured to one end of a shaft, H; land at the side of the frame C is a sliding piece, R, a pin at the upper end of which projects into a scroll groove in the face of the disk Q.

At one side of the base-plate, and forming part of the same, is a iiange or plate, A', the face of which is below that of the plate A; and in openings in this iiange, at right angles to each other, slide two carriers, M and M', in which are secured two adjustable hammers, S S', the inner end of each of which is opposite and parallel to one of the edges t' and t2 of the plate A, the said edges being formed by' cutting the plate away, as shown in Figs. 5 and 6.

To the under side of the plate A' are hung two levers, p and p', the former bein g jointed to an arm, q, connected to the carrier M, Fig. 1, and the latter to an arm, g', connected to the carrier M', Fig. 2.

The lever p' is connected by a link, r, to the end of a lever, T, which is jointed to a hanger,

T', at the under side of the plate A', and t9 the lever is connected a link, r', which is connected at its opposite end to the lever p. A rod, R', connects the slide R and the outer end of the lever T together, Fig. 1.

In guides at the under side of the base-plate A slides a bar, 10, the inner end of which is adapted to notches or recesses s s in the edge of the disk U, there being six recesses in the said disk at equal distances from each other.

Into an opening in the outer end of the bar 10 projects one arm of a bell-crank lever, c', Fig. 1, the opposite arm of which is jointed to the lower end of a bar, V, sliding in guides secured to the frame U'.

At the upper end of the bar V are two projections, 18 and 19, Fig. 3, and on the shaft H are projections 20 and 21, which, as the shaft revolves, strike the projections 1S and 19, and thus impart a vertical reciprocating motion to the bar V.

To the outer end of the shaft K is secured a ratchet-wheel, 11, Fig. 1, and to the shaft,

v during a portion of the movement of the shaft,

bears against the short arm ofthe lever 15.

Operation: The parts of the machine being 1u the position shown in the drawings, a bar of iron, W, is introduced beneath the plate N until its end projects into one of the recesses i z' im the disk J, and a'rotary motion is iml parted to the driving-shaft I in the direction of lts arrow, when the operation of the machine will be as follows: As the shaft H revolves in the direction ofits arrow, Fig. 2, the projection 'w' will be brought against the upper end of the connecting-rod L, and the latter, with the cross head E, will be depressed until the projection passes from contact with the rod, when the spring j will force the latter back to its rst position, while the projection u will be brought against the shoulder a and will raise the cross-head. As the cross-head E descends the iron bar w will be severed by the two cutters d and k, the blank z thus detached from the bar remaining in the recess z' in the disk J, while the end of the bar is confined between the slide l and the end of thecutter d. As the cross-head is raised the projection 16 is brought against the end of the lever 15, the outer end of the latter is raised, and the lever 12 is caused to turn on the shaft K, the pawl 15 being brought into contact with one of the teeth of the ratchet-wheel 1l, so that the latter and the shaft K will be turned with the lever to the extent of one-sixth of a revolution. The motion of the shaft K is communicated through the bevel-wheels g' and g2 and shaft g to the disk J, which is thus also turned one-sixth of a revolution, the blank z being carried beneath the punch d. When the movement of the disk has been completed it is secured in its position by the rod 10, which is moved forward, so that its end is introduced into one of the openings, s, in the disk U. As the cross-head E again descends the punch d' will be brought onto the blank z, and will make the latter convex-on the top. As the cross-head again rises the blankz is discharged from the punch by the action of the rod t', which is depressed by the spring t", and the rod 1() is again moved back from contact with the disk U. The disk J will now turn until the blank is brought beneath the punch d2, when the rod 10 will again move forward, and the punch will descend and make a hole in the center of the blank, the plate N' stripping the blank from the punch when the latter ascends. On the next movement of the disk the blank will be brought beneath the punch d3, and the latter, as it descends, will press down the blank and the slide m, on which it rests, until the upper end of the slide is level with the plate A', the end of the rod n projecting into the opening in the blank. The lever T will now be so operated that the hammers S S' will be brought alternately against the sides of the blank, each hammer striking the blank twice, and the latter being compressed between the hammers and the edges t' t" of the plate A', so that the sides will be perfectly at and the nut perfectly square. As the punch d3 rises the slide m will be raised until the blank z is again introduced into the adjacent opening z' in the disk J. The blank is now carried by the movement of the disk below the punch d4, which, when it descends, slightly flattens the blank on the top, after which it is carried beneath the punch d5, which forces it from the recess z' and through the opening in thebaseplate into any suitable receptacle.

B y the use of the rod L and shaft HL, with its rib w, in connection with the cross-head, the latter may be readily depressed, and with such force to eft'ectually form the nuts, while the use of cams, Which are expensive and other wise objectionable, is avoided.

While a positive motion is imparted to the carriers M M' through the medium of the devices described, the extent to Which the nut shall be compressed may be readily regulated by adjusting the hammers in the carriers.

It will also be seen that by substituting a gib and a key for the devices ordinarily used for fastening the punches in the boxes or carriers much time may be saved in securing the punches in and removing them from their places.

Without conning myself to the precise construction and arrangement of parts herein described, I claim as my invention and desire to secure by Letters Patentl. The revolving disk J, with its recesses z, in combination with a series of punches and dies arranged in a circle, the Whole being constructed and operating substantially as and for the purpose described.

2. rEhe cross-head E and its arm L, in combination with the shaft H and its rib w, the Whole being constructed and operating substantially as and for thc purpose specified.

3. The combination of the boxes or casings c, punches d, andgibs and keys, the Whole being arran ged substantially as and for the purpose set forth.

4. The carriers M and M', with their adjustable hammers, the Whole being arranged, in conjunction With the rotating disk J, to opel1` ate on the blank, substantially as and for the purpose described.

5. The combination of the carriers M M', lever T, and arms and levers p q, the Whole being` arranged and operating substantially as and for the purpose set forth.

G. The slide Z and spring 5, or its equivalent, in combination with the cutters d 7c.

7. The slide m, operating in combination with the punch d3, hammers S S', and disk J, substantially as and for the purpose described.

In testimony whereof I havesigned my name to this specification in the presence of two subscribin g Witnesses.

` W. W. HUBBARD. Vitnesses CHARLES E. FOSTER, JOHN WHITE. 

